﻿#include "qapplication.h"
#pragma execution_character_set("utf-8")

#include "ipaddress.h"
#include "qlabel.h"
#include "qlineedit.h"
#include "qboxlayout.h"
#include "qregexp.h"
#include "qvalidator.h"
#include "qevent.h"
#include "qdebug.h"
#include "tool_tipper.h"

#include <QDesktopWidget>
#include <QStyle>
#include <QToolTip>

IPAddress::IPAddress(QWidget* parent) : QWidget(parent)
{
	//bgColor = "#FFFFFF";
	bgColor = "#142333";
	borderColor = "#A6B5B8";
	borderRadius = 3;

	//用于显示小圆点的标签,居中对齐
	labDot1 = new QLabel;
	labDot1->setAlignment(Qt::AlignCenter);
	labDot1->setText(".");

	labDot2 = new QLabel;
	labDot2->setAlignment(Qt::AlignCenter);
	labDot2->setText(".");

	labDot3 = new QLabel;
	labDot3->setAlignment(Qt::AlignCenter);
	labDot3->setText(".");

	//用于输入IP地址的文本框,居中对齐
    txtIP1 = new QLineEdit;
    txtIP1->setObjectName("txtIP1");
    txtIP1->setAlignment(Qt::AlignCenter);
    txtIP1->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    connect(txtIP1, SIGNAL(textChanged(QString)), this, SLOT(textChanged(QString)));
   // txtIP1->hide();

	txtIP2 = new QLineEdit;
	txtIP2->setObjectName("txtIP2");
	txtIP2->setAlignment(Qt::AlignCenter);
	txtIP2->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	connect(txtIP2, SIGNAL(textChanged(QString)), this, SLOT(textChanged(QString)));

	txtIP3 = new QLineEdit;
	txtIP3->setObjectName("txtIP3");
	txtIP3->setAlignment(Qt::AlignCenter);
	txtIP3->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	connect(txtIP3, SIGNAL(textChanged(QString)), this, SLOT(textChanged(QString)));

    txtIP4 = new QLineEdit;
    txtIP4->setObjectName("txtIP4");
    txtIP4->setAlignment(Qt::AlignCenter);
    txtIP4->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    connect(txtIP4, SIGNAL(textChanged(QString)), this, SLOT(textChanged(QString)));
  //  txtIP4->hide();

	//设置IP地址校验过滤
	QString pattern = "(2[0-5]{2}|2[0-4][0-9]|1?[0-9]{1,2})";
	//确切的说 QRegularExpression QRegularExpressionValidator 从5.0 5.1开始就有
#if (QT_VERSION >= QT_VERSION_CHECK(6,0,0))
	QRegularExpression regExp(pattern);
	QRegularExpressionValidator* validator = new QRegularExpressionValidator(regExp, this);
#else
	QRegExp regExp(pattern);
	QRegExpValidator* validator = new QRegExpValidator(regExp, this);
#endif


	txtIP1->setValidator(validator);
	txtIP2->setValidator(validator);
	txtIP3->setValidator(validator);
	txtIP4->setValidator(validator);

	//绑定事件过滤器,识别键盘按下
	txtIP1->installEventFilter(this);
	txtIP2->installEventFilter(this);
	txtIP3->installEventFilter(this);
	txtIP4->installEventFilter(this);

	QFrame* frame = new QFrame;
	frame->setObjectName("frameIP");

	QStringList qss;
	qss.append(QString("QFrame#frameIP{border:1px solid %1;border-radius:%2px;}").arg(borderColor).arg(borderRadius));
	qss.append(QString("QLabel{min-width:15px;background-color:%1;}").arg(bgColor));
	qss.append(QString("QLineEdit{background-color:%1;border:none;}").arg(bgColor));
	qss.append(QString("QLineEdit#txtIP1{border-top-left-radius:%1px;border-bottom-left-radius:%1px;}").arg(borderRadius));
	qss.append(QString("QLineEdit#txtIP4{border-top-right-radius:%1px;border-bottom-right-radius:%1px;}").arg(borderRadius));
	frame->setStyleSheet(qss.join(""));

	QVBoxLayout* verticalLayout = new QVBoxLayout(this);
	verticalLayout->setContentsMargins(0, 0, 0, 0);
	verticalLayout->setSpacing(0);
	verticalLayout->addWidget(frame);

	//将控件按照横向布局排列
	QHBoxLayout* layout = new QHBoxLayout(frame);
	layout->setContentsMargins(0, 0, 0, 0);
	layout->setSpacing(0);
	layout->addWidget(txtIP1);
	layout->addWidget(labDot1);
	layout->addWidget(txtIP2);
	layout->addWidget(labDot2);
	layout->addWidget(txtIP3);
	layout->addWidget(labDot3);
	layout->addWidget(txtIP4);
}

bool IPAddress::eventFilter(QObject* watched, QEvent* event)
{
    if ( event->type() == QEvent::HoverEnter )
    {
        QString itemText = ip;
        QSize iconSize(0, 0);
        QHelpEvent* helpEvent = static_cast<QHelpEvent*>(event);
        // 文本边距
        const  int textMargin = this->style() ->pixelMetric(QStyle::PM_FocusFrameHMargin) + 1;
        const  int iconMargin = iconSize.width() > 0 ? (this->style()->pixelMetric(QStyle::PM_FocusFrameHMargin) + 1) : 0;

        QDesktopWidget * desk = qApp->desktop();
        QRect rect = desk->screenGeometry( this);//->>frameGeometry();//>geometry();//>visibleRegion().Rectangle();//>visualRect(index);
        QRect textRect = rect.adjusted(textMargin + iconSize.width() + iconMargin * 2, 0, -textMargin, 0);  //实际可用矩形

        QFontMetrics fm(this->font());
       // int flags = this->model()->data(index, Qt::TextAlignmentRole).toInt();
        QSize itemTextSize = fm.boundingRect(textRect,   Qt::TextLongestVariant | Qt::TextWordWrap, itemText).size();


      //  if ((itemTextSize.width() > textRect.width() || itemTextSize.height() > textRect.height()) && !itemText.isEmpty())
        {
            // 指定tip的限定矩形
           // rect.adjust(headerWidth, headerHeight, headerWidth, headerHeight);
            QToolTip::showText(helpEvent->globalPos(), itemText, this, rect);
        }
       // else
        {
       //     QToolTip::hideText();
        }
    }
	if (event->type() == QEvent::KeyPress) {
		QLineEdit* txt = (QLineEdit*)watched;
		if (txt == txtIP1 || txt == txtIP2 || txt == txtIP3 || txt == txtIP4) {
			QKeyEvent* key = (QKeyEvent*)event;

			//如果当前按下了小数点则移动焦点到下一个输入框
			if (key->text() == ".") {
				this->focusNextChild();
			}

			//如果按下了退格键并且当前文本框已经没有了内容则焦点往前移
			if (key->key() == Qt::Key_Backspace) {
				if (txt->text().length() <= 1) {
					this->focusNextPrevChild(false);
				}
			}
		}
	}

	return QWidget::eventFilter(watched, event);
}

void IPAddress::textChanged(const QString& text)
{
	int len = text.length();
	int value = text.toInt();

	//判断当前是否输入完成一个网段,是的话则自动移动到下一个输入框
	if (len == 3) {
		if (value >= 100 && value <= 255) {
			this->focusNextChild();
		}
	}

	//拼接成完整IP地址
    ip = QString("%1-%2-%3-%4")
             .arg(txtIP1->text().toInt(), 2, 10, QLatin1Char('0'))
             .arg(txtIP2->text().toInt(), 2, 10, QLatin1Char('0'))
             .arg(txtIP3->text().toInt(), 2, 10, QLatin1Char('0'))
             .arg(txtIP4->text().toInt(), 2, 10, QLatin1Char('0'));
}

QSize IPAddress::sizeHint() const
{
	return QSize(250, 20);
}

QSize IPAddress::minimumSizeHint() const
{
	return QSize(30, 10);
}

QString IPAddress::getIP() const
{
	return this->ip;
}

void IPAddress::setIP(const QString& ip)
{
	//先检测IP地址是否合法
    QRegExp regExp("((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\-){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)");
	if (!regExp.exactMatch(ip)) {
		return;
	}

	if (this->ip != ip) {
		this->ip = ip;

		//将IP地址填入各个网段
        QStringList list = ip.split("-");
		txtIP1->setText(list.at(0));
		txtIP2->setText(list.at(1));
		txtIP3->setText(list.at(2));
		txtIP4->setText(list.at(3));
	}
}

void IPAddress::clear()
{
	txtIP1->clear();
	txtIP2->clear();
	txtIP3->clear();
	txtIP4->clear();
	txtIP1->setFocus();
}

void IPAddress::setBgColor(const QString& bgColor)
{
	if (this->bgColor != bgColor) {
		this->bgColor = bgColor;
	}
}

void IPAddress::setBorderColor(const QString& borderColor)
{
	if (this->borderColor != borderColor) {
		this->borderColor = borderColor;
	}
}

void IPAddress::setBorderRadius(int borderRadius)
{
	if (this->borderRadius != borderRadius) {
		this->borderRadius = borderRadius;
	}
}
